<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column prop="username" label="姓名"></el-table-column>
                <el-table-column prop="email" label="邮箱"></el-table-column>
                <el-table-column prop="mobile" label="电话"></el-table-column>
                <el-table-column prop="role_name" label="角色"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="300">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">编辑</el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" size="mini" icon="el-icon-delete" @click="deleteUserById(scope.row.id)">删除</el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" size="mini" icon="el-icon-setting" @click="setRole(scope.row)">分配角色</el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum" :page-sizes="[2, 5, 10, 20]" :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper" :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
            <!-- 内容主体区域 -->
            <el-form ref="addFormRef" :rules="addFormRules" :model="addForm" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 编辑用户的对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
            <!-- 内容主体区域 -->
            <el-form ref="editFormRef" :rules="editFormRules" :model="editForm" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色对话框 -->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{ userInfo.username }}</p>
                <p>当前的角色：{{ userInfo.role_name }}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                            v-for="item in rolesList"
                            :key="item.id"
                            :label="item.roleName"
                            :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>

export default {
    name: 'Users',
    data() {
        //验证邮箱的规则
        var checkEmail = (rule,value,cb) => {
            //验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
            if(regEmail.test(value)){
                //合法的邮箱
                return cb();
            }
            //邮箱不合法
            cb(new Error('请输入合法的邮箱！'));
        }
        //验证手机号的规则
        var checkMobile = (rule,value,cb) =>{
            const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
            if(regMobile.test(value)){
                //合法的手机号
                return cb();
            }
            //手机号不合法
            cb(new Error('请输入合法的手机号！'));
        }
        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                // 当前的页数
                pagenum: 1,
                // 当前每页显示多少条数据
                pagesize: 5
            },
            userlist: [],
            total: 0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            // 添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            // 控制编辑用户对话框的显示与隐藏
            editDialogVisible: false,
            // 编辑用户的表单数据
            editForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            // 添加表单的验证规则对象
            addFormRules: {
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ],
            },
            editFormRules: {
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            // 角色列表
            rolesList: [],
            // 已选中的角色Id值
            selectedRoleId: ''
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
            const { data: res } = await this.$http.get('users', {
                params: this.queryInfo
            })
            // console.log(res);
            if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
            this.userlist = res.data.users
            this.total = res.data.total
        },
        // 监听Switch开关状态的变化
        async userStateChanged(userinfo) {
            // console.log(userinfo);
            const { data: res } = await this.$http.put(
                `users/${userinfo.id}/state/${userinfo.mg_state}`
            )
            // console.log(res);
            if (res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败！')
            }
            this.$message.success('更新用户状态成功！')
        },
        // 监听pagesize改变的事件
        handleSizeChange(newSize) {
            // console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听页码值改变的事件
        handleCurrentChange(newNum) {
            // console.log(newNum);
            this.queryInfo.pagenum = newNum
            this.getUserList()
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields();
        },
        // 点击按钮，添加用户
        addUser() {
            this.$refs.addFormRef.validate(async valid => {
                if(valid) {
                    // 可以发起添加用户的网络请求
                    const { data: res } = await this.$http.post('users', this.addForm)
                    // console.log(res);
                    if (res.meta.status === 201) {
                        this.$message.success('添加用户成功')
                        // 隐藏添加用户的对话框
                        this.addDialogVisible = false
                        // 重新获取用户列表数据
                        this.getUserList()
                    } else {
                        this.$message.error('添加用户失败')
                    }
                }else {
                    return
                }
            })
        },
        // 编辑用户的对话框
        async showEditDialog(id) {
            // console.log(id);
            const { data: res } = await this.$http.get(`users/${id}`)
            // console.log(res);
            if(res.meta.status === 200) {
                this.editForm = res.data
                this.editDialogVisible = true
            }else {
                return this.$message.error('查询用户信息失败！')
            }
        },
        // 监听编辑用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if(valid) {
                    const { data: res } = await this.$http.put('users/' + this.editForm.id, {
                        email: this.editForm.email,
                        mobile: this.editForm.mobile
                    })
                    console.log(res);
                    if(res.meta.status === 200) {
                        // 关闭对话框
                        this.editDialogVisible = false
                        // 刷新数据列表
                        this.getUserList()
                        // 提示修改成功
                        this.$message.success('更新用户信息成功！')
                    }else {
                        return this.$messgae.error('更新用户信息失败！')
                    }
                }else {
                    return 
                }
            })
        },
        // 根据id删除对应得用户信息
        async deleteUserById(id) {
            // console.log(id);
            // 弹窗询问用户是否删除
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch (err => err)
            
            // 如果用户确认删除，则返回值为字符串 confirm
            // 如果用户取消了删除，则返回值为字符串 cancel
            console.log(confirmResult);
            if(confirmResult === 'confirm') {
                const { data: res } = await this.$http.delete('users/' + id)
                console.log(res);
                if(res.meta.status === 200) {
                    this.$message.success('删除用户成功！')
                    // 刷新数据列表
                    this.getUserList()
                }else {
                    return this.$message.error('删除用户失败！')
                }
            }else {
                return this.$message.info('已取消删除')
            }
        },
        // 展示分配角色的对话框
        async setRole(userInfo) {
            this.setRoleDialogVisible = true;
            // console.log(userInfo);
            this.userInfo = userInfo;
            // 在展示分配角色的对话框之前，获取所有的角色
            const { data: res } = await this.$http.get('roles')
            // console.log(res);
            if(res.meta.status === 200) {
                this.rolesList = res.data;
            }else {
                return this.$message.error('获取角色列表失败！')
            }
        },
        // 保存角色信息
        async saveRoleInfo() {
            if(this.selectedRoleId) {
                const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
                    rid: this.selectedRoleId
                })
                console.log(res);
                if(res.meta.status === 200) {
                    this.getUserList()
                    this.setRoleDialogVisible = false;
                }else {
                    return this.$message.error('更新角色失败')
                }
            }else {
                return this.$message.error('请选择要分配的角色')
            }
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed() {
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }
};

</script> 

<style lang="less" scoped>

</style>
